SYX66x Commissioning Guide
V1.10.3 300117
Page 28 of 61
Parameter
Default
Range
Description
Heating Override
Period
1h
0 to 10h
Time Extension Period in Hours
HWS Override Period
1h
0 to 10h
Time Extension Period in Hours
VT Set point Self
Adaption
Adaptive
Adaptive
– Non-adaptive If selected, the compensator will self-
adapt with Space Influence.
Optimum Stop
Enabled
Enabled - Disabled
Turns off the heating early under certain
conditions.
Origin
20°C
10°C - 80°C
The base flow temperature set point
during the day when the outside air
temperature is 20°C
Space Frost Set point
10°C
5°C
– 25°C
Minimum Space Temp allowed before
heating is enabled. If space temperature
falls below the Space Frost limit, the valve
will be controlled to the compensated flow
high value and pump and boiler will
switch on.
Room High Limit
Offset
2°C
2°C -20°C
Room Day Set point + Room High Limit
Offset = Room High Limit Set point. If the
Room temperature goes above the
Room High Limit Set point then the
Heating is set to Night Mode and the
heating is disabled. When the Room falls
by 1°C heating is returned to Auto.
VT Ratio
3
0
– 10
Influence on the Heating Flow Set point
based on 1’C change in Outside air
temperature.
Compensated Flow
Low
35°C
0°C
– 85°C
Minimum value of compensated flow
temperature during compensation.
Compensated Flow
High
82°C
10°C
– Boiler High
Value
Maximum value of compensated flow
temperature during compensation.
Occurs when the outside temperature is
at or below its low value. Also used to
control the valve during frost protection
and optimum start (heating up)
Flow Night Setback
-15°C
0°C to -50°C
Compensated flow depression
– this will
cause the subtraction from the calculated
compensated flow temperature of x°C.
Space Set point
20°C
5°C
– 50°C
The desired temperature for the
controlled space.
